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Finding the Fourth Proportional to 353,643.66, 530,460.29 and 87,404.20

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Solution

The fourth proportional to 353,643.66, 530,460.29 and 87,404.20 is: 131,105.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,643.66 : 530,460.29 = 87,404.20 : x
  2. Step 2: Convert to fraction form
    353,643.66/530,460.29 = 87,404.20/x
  3. Step 3: Cross multiply
    353,643.66x = 530,460.29 × 87,404.20
  4. Step 4: Simplify right side
    353,643.66x = 46,364,456,171.58
  5. Step 5: Solve for x
    x = 46,364,456,171.58/353,643.66
  6. Step 6: Final answer
    x = 131,105.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.